HJ
Hilda Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Boulder-County, Colorado
Our Model Tree links this Hilda Johnson across the 1920, 1930 and 1940 US Censuses in Boulder-County, Colorado (XGBoost, ~Confirmed), with identified parents Charlotte & Eva — first a daughter (b.~1890), then head of a 3-person household.
Age 50
b. ~1890
Female
Daughter
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Boulder-County, Colorado |
| Surname | Johnson |
| Given Name | Hilda |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Boulder city |
| 1935 Residence (County) | Boulder |
| Additional Details | |
| Occupation | housekeeper |
| Industry | fraternity house |
| Class of Worker | PW |
| Hours Worked | 63 |
| Income (1939) | 560 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Housekeeper |
| Township / Ward | Boulder City |
| Est. Birth Year | ~1890 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Hilda | Age | Birth yr |
|---|---|---|---|---|
| Hilda Johnson | Daughter | — | 50 | ~1890 |
| Eva Johnson | Head | — | 86 | ~1854 |
| Robert Johnson | Other | — | 57 | ~1883 |
Census Appearances
1920
Boulder, Colorado
Daughter, age 30
Boulder, Colorado · implied b. ~1890 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Hulda |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Stenographer |
| Industry | Office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Boulder, Colorado
Head, age 40
Boulder, Colorado · implied b. ~1890 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Hulda |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Nurse |
| Industry | Hospital |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 2000 |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Boulder-County, Colorado
Daughter, age 50
Boulder-County, Colorado · implied b. ~1890 — 3 household members
| Surname | Johnson |
| Given Name | Hilda |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Boulder city |
| 1935 Residence (County) | Boulder |
| Occupation | housekeeper |
| Industry | fraternity house |
| Class of Worker | PW |
| Hours Worked | 63 |
| Income (1939) | 560 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Hilda Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Charlotte Johnson (~0.92 confidence) and mother Eva Johnson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Charlotte Johnson
b. ~1854
Source mother
● Household
· direct · ~0.92
Mother
Eva Johnson
b. ~1854
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Hilda Johnson
Daughter · 1940 · age 50 · b. ~1890 · Colorado
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Boulder-County, Colorado
Open full size
1940 US Federal Census — Boulder-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00457-00913)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Vesta Ferguson | 62 | Wife | — | Iowa |
| 2 | Frances Ferguson | 16 | Daughter | — | Iowa |
| 3 | Leo O'Neil | 44 | Head | Attendant | Nebraska |
| 4 | Cleo O'Neil | 45 | Wife | Cook | Iowa |
| 5 | Le Rae O'Neil | 20 | Daughter | Attendant | Nebraska |
| 6 | James Majors | 63 | Head | — | Colorado |
| 7 | Mary Majors | 52 | Wife | — | England |
| 8 | Thomas Majors | 30 | Son | Laborer | Colorado |
| 9 | Francis Majors | 15 | Son | Helper | Colorado |
| 10 | Owen Majors | 12 | Son | — | Colorado |
| 11 | Cora L. Chamberlain | 68 | Head | — | Minnesota |
| 12 | Lucinda Ueltchi | 71 | Sister | Seamstress | Minnesota |
| 13 | Blenda Davidson | 69 | Head | — | Sweden |
| 14 | Emelia N. Emmett | 65 | Sister | Housekeeper | Sweden |
| 15 | Paul R. Corey | 61 | Head | Decorating | Michigan |
| 16 | Bertha A. Corey | 55 | Wife | — | Missouri |
| 17 | Robert Corey | 15 | Son | — | Colorado |
| 18 | Christine Corey | 10 | Daughter | — | Colorado |
| 19 | Mary A. Lloyd | 74 | Head | — | Indiana |
| 20 | Hattie Jackson | 49 | Head | — | Missouri |
| 21 | Jesse Jackson | 16 | Son | 22 | Wyoming |
| 22 | George E. Evans | 50 | Head | Electrician | Kansas |
| 23 | W. Lilo Valley | 52 | Head | 3 | Colorado |
| 24 | Josephine Valley | 36 | Wife | — | Colorado |
| 25 | Arlene Valley | 17 | Daughter | — | Colorado |
| 26 | Donna Lou Valley | 1 | Daughter | — | Colorado |
| 27 | Charles W. Gibbs | 48 | Head | Proprietor | Kansas |
| 28 | Lois Gibbs | 50 | Wife | — | Kansas |
| 29 | Darrel Gibbs | 23 | Son | — | Kansas |
| 30 | Leroy A. Shields | 28 | Head | Laborer | Kansas |
| 31 | Irene B. Shields | 23 | Wife | Cook | Colorado |
| 32 | Leonard Brown | 24 | Head | 40 | Illinois |
| 33 | Marie Brown | 24 | Wife | 56 | Illinois |
| 34 | Jean Lea Brown | 1 | Daughter | — | Illinois |
| 35 | Eva C. Johnson | 86 | Head | — | Sweden |
| 36 | Hilda Johnson THIS PERSON | 50 | Daughter | Housekeeper | Colorado |
| 37 | Robert A. Johnson | 57 | Nephew | 17 | Sweden |
| 38 | Joseph N. Helburg | 51 | Head | 48 | Colorado |
| 39 | Nellie Helburg | 51 | Wife | — | Colorado |
| 40 | Florence M. Helburg | 23 | Daughter | — | Colorado |
Pedigree Summary
Hilda
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)